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cdmapi32.dll

Updated: Files Available: 2
Metadata AI Analysis x86 (32 bit)

Download and install cdmapi32.dll to fix missing or corrupted DLL errors.

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DLL Overview

Last Updated
Dec 15th, 2025
Filename
cdmapi32.dll
Company
OMRON Corporation
Product
CX-Server
Description
CX-Server interface DLL
Architecture
x86 (32 bit)
Metadata Consensus
2/2 Files 100%
Higher percentages indicate stronger agreement across versions. View available versions or browse repository metadata to compare differences between variants.

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About cdmapi32.dll

cdmapi32.dll is a DLL file (Dynamic Link Library) used by Windows programs to share code and resources. It allows multiple applications to use the same functions, improving performance and reducing redundancy.

Overview

What Is cdmapi32.dll?

cdmapi32.dll is an interface library used by OMRON CX-Server, a core communication layer included in OMRON’s industrial automation software suites such as CX-One. It provides the APIs that CX-Server uses to communicate with OMRON PLCs and related hardware.

  • Filename: cdmapi32.dll
  • Company: OMRON Corporation
  • Product: CX-Server
  • Description: CX-Server interface DLL

This DLL is required by engineering tools, diagnostics utilities, and communication drivers that rely on CX-Server to connect to OMRON controllers.


What cdmapi32.dll Does

cdmapi32.dll contains the interface functions that allow software to:

  • Communicate with OMRON PLCs through CX-Server
  • Handle device connections (USB, serial, Ethernet, or networked PLC routes)
  • Exchange data with OMRON automation equipment
  • Perform read/write operations on PLC memory areas
  • Support device configuration, monitoring, and diagnostics

It acts as a bridge between CX-One components and the CX-Server runtime.


Why It’s Often Requested for CX-One

Many users request this DLL because:

  • CX-One or CX-Server installations may become incomplete or corrupted
  • The DLL may be missing after system migration or manual file moves
  • Some CX-One applications require this DLL to start or to communicate with PLCs

Restoring the legitimate CX-Server installation is the correct fix.


Where cdmapi32.dll Is Located

The DLL is installed as part of CX-Server and typically appears in OMRON program directories, such as:

C:/Program Files/OMRON/CX-Server/
C:/Program Files (x86)/OMRON/CX-Server/

Applications that depend on it load it from the official CX-Server installation path.


Common Error Messages

If the DLL is missing or damaged, users may see:

cdmapi32.dll not found

Failed to initialize CX-Server interface

CX-Server is not installed or is corrupted

Cannot communicate with PLC: missing interface component

These errors usually indicate a CX-Server installation issue.


How to Fix cdmapi32.dll Issues

1. Reinstall or repair OMRON CX-Server

The DLL is installed only through the official CX-Server or CX-One installer. A repair install restores the correct version.


2. Ensure all CX-One components are installed

Some features rely on optional communication drivers. Running the full installer ensures all dependent modules are present.


3. Avoid manual DLL replacement

OMRON applications require exact DLL versions that match the installed CX-Server build. Copying the DLL from other systems may cause inconsistencies.


4. If files appear corrupted, use Windows system repair tools

DISM /Online /Cleanup-Image /RestoreHealth

sfc /scannow

These commands can restore system integrity if a Windows component interferes with DLL loading.


Summary

cdmapi32.dll is the CX-Server interface library used by OMRON CX-One and related automation tools to communicate with OMRON PLCs. It provides essential communication APIs for device connections, data access, and diagnostics. Most issues are resolved by repairing or reinstalling CX-Server, ensuring all CX-One components are installed, and avoiding mismatched DLL versions.

File information is supported by Human Assisted Artificial Intelligence and should be used as a helpful tool. However, it is important to keep in mind that this information may not be up-to-date or entirely accurate.

Troubleshooting DLL Errors

Most errors involving cdmapi32.dll occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application or replacing the DLL resolves the issue. The steps below cover the most common and reliable ways to fix these errors.

Windows DLL Error Examples

This application has failed to start because cdmapi32.dll was not found. Re-installing the application may fix this problem.
cdmapi32.dll Not Found.

Fixes and Solutions

The first step in resolving DLL errors is to completely uninstall the affected software and reinstall its latest version. We know this does not always solve the problem, which is why DLLme exists. If reinstalling the application does not help, or if you are unsure which app is causing the error, follow the steps below. These are the most common solutions for fixing cdmapi32.dll errors.

  • Repair Windows: Make sure Windows is fully updated, then open Windows Terminal or PowerShell as an administrator (search for “PowerShell” in the Start menu, right-click it, and choose “Run as administrator”). This allows you to repair the Windows component store and run the System File Checker (SFC).

    Repair the Windows component store so SFC can pull clean files:

    DISM /Online /Cleanup-Image /RestoreHealth

    Scan all protected system files and automatically repair problems:

    sfc /scannow
  • Uninstall & Reinstall: On this DLL page, check the Company/Product section to identify the related app, then fully uninstall it. If you plan to continue using it, reinstall the latest version. Be sure to save or back up any important data before uninstalling. Windows or antivirus software may sometimes quarantine DLL files, especially if the DLL is unfamiliar or appears suspicious. Check your antivirus quarantine or logs to determine if this is the cause of your issue.
  • Download the DLL: Download the latest 32-bit or 64-bit version of the DLL directly from our repository using the download button above. Most users will need the 64-bit version, but if you are unsure, or if a 64-bit version is not available, you can install both the 32-bit and 64-bit DLLs. DLLme verifies DLLs that come from our admins, partners, and trusted affiliates. User-uploaded files may be verified later if a trusted source is confirmed.
  • Register the DLL: Most DLL files do not need registration, but some DLLs are COM components and must be registered to work correctly. If registration is required, open Windows Terminal or PowerShell as an administrator.

    Register the DLL (you can also drag the DLL file into the window to automatically fill in its full path):

    regsvr32 "C:\path\to\cdmapi32.dll"

    If you are registering a 32-bit DLL on 64-bit Windows, use the 32-bit RegSvr32:

    C:\Windows\SysWOW64\regsvr32 "C:\path\to\cdmapi32.dll"

    Or open Windows Terminal/PowerShell in the DLL’s folder and run:

    regsvr32 cdmapi32.dll

How to Install cdmapi32.dll

To install cdmapi32.dll, place the DLL file in the appropriate Windows system folder or in the same folder as the application’s .exe file. If you are not sure which version (32-bit or 64-bit) to use, you can safely install both.

On 64-bit versions of Windows, place 64-bit DLL files in:

C:\Windows\System32\cdmapi32.dll

Place 32-bit DLL files in:

C:\Windows\SysWOW64\cdmapi32.dll

Or place the DLL file next to the application’s .exe:

C:\path\to\exe\cdmapi32.dll

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